## The value for 〈0|O2|K 〉/〈0|s̄γ5d|K 〉 is shown in the upper panel. The lower panel is a plot of the K → π matrix element of Õ 1 2 2 normalized as in Eq

- L. Maiani, M. Testa, Phys. Lett
- 1990

We are using domain wall fermions to study K → ππ matrix elements by measuring K → π and K → 0 matrix elements on the lattice and employing chiral perturbation theory to relate these to the desired physical result. The residual chiral symmetry breaking of domain wall fermions with a finite extent in the fifth dimension impacts these measurements. Using the… (More)